JP6180145B2 - Intake air cooling system - Google Patents

Intake air cooling system Download PDF

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Publication number
JP6180145B2
JP6180145B2 JP2013064453A JP2013064453A JP6180145B2 JP 6180145 B2 JP6180145 B2 JP 6180145B2 JP 2013064453 A JP2013064453 A JP 2013064453A JP 2013064453 A JP2013064453 A JP 2013064453A JP 6180145 B2 JP6180145 B2 JP 6180145B2
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water
intake air
intake
nozzles
air cooling
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JP2014190182A (en
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篤彦 金箱
篤彦 金箱
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Mitsubishi Power Ltd
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Mitsubishi Hitachi Power Systems Ltd
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Priority to JP2013064453A priority Critical patent/JP6180145B2/en
Priority to TW103102940A priority patent/TWI557312B/en
Priority to PCT/JP2014/051864 priority patent/WO2014156277A1/en
Priority to EP14775523.5A priority patent/EP2980384B1/en
Priority to US14/769,237 priority patent/US9790858B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/12—Cooling of plants
    • F02C7/14—Cooling of plants of fluids in the plant, e.g. lubricant or fuel
    • F02C7/141—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid
    • F02C7/143—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid before or between the compressor stages
    • F02C7/1435—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid before or between the compressor stages by water injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/08—Cooling; Heating; Heat-insulation
    • F01D25/12—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
    • F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
    • F02C3/30—Adding water, steam or other fluids for influencing combustion, e.g. to obtain cleaner exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
    • F02C9/16—Control of working fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1201—Rotational speed of the axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0209—Rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/32—Application in turbines in gas turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/212—Heat transfer, e.g. cooling by water injection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/311—Air humidity

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Compressor (AREA)

Description

本発明は、ガスタービンの圧縮機に導入される吸気を冷却する吸気冷却装置に関する。   The present invention relates to an intake air cooling device that cools intake air introduced into a compressor of a gas turbine.

圧縮機、燃焼器、及びタービン等から構成される発電用ガスタービンでは、圧縮機へ吸気される吸気の温度によってタービンにおける出力が影響を受ける。例えば、大気温度が高い夏季には、吸気の密度が低下して質量流量が低下するため、タービンの出力が低下する。このようなタービンの出力低下を抑止するために、高温な吸気に冷媒となる水を噴射して、水の蒸発潜熱を利用して吸気を冷却する吸気冷却装置が従来から使用されている。   In a power generation gas turbine composed of a compressor, a combustor, a turbine, and the like, the output of the turbine is affected by the temperature of the intake air taken into the compressor. For example, in summer when the atmospheric temperature is high, the density of the intake air decreases and the mass flow rate decreases, so the output of the turbine decreases. In order to suppress such a decrease in the output of the turbine, an intake air cooling device that injects water as a refrigerant into hot intake air and cools the intake air by using the latent heat of evaporation of water has been conventionally used.

吸気冷却装置で吸気冷却をする際に、オーバーフォギングで相対湿度が１００％を超えると、余分に噴射したミストがドレンとなってしまう。かかるドレンが後流側の圧縮機に侵入すると、圧縮機がロック等して故障するリスクがある。このため、吸気冷却装置で吸気冷却をする際に、オーバーフォギングしないように、温度や湿度等の大気の条件に応じて、吸気に噴射する冷媒の量を調整する必要がある。吸気に噴射する冷媒量を調整するために、冷媒供給系統を複数設けて、大気の条件に応じて、各冷媒供給系統のオン・オフを切り替えることによって、オーバーフォギングしないように冷媒を効率よく気化させる吸気冷却装置が特許文献１に開示されている。   When the intake air cooling is performed by the intake air cooling device, if the relative humidity exceeds 100% due to overfogging, the excessively injected mist becomes drainage. When such drain enters the compressor on the downstream side, there is a risk that the compressor will be locked and broken. For this reason, when performing intake air cooling with the intake air cooling device, it is necessary to adjust the amount of refrigerant injected into the intake air in accordance with atmospheric conditions such as temperature and humidity so as not to overfogg. In order to adjust the amount of refrigerant injected into the intake air, multiple refrigerant supply systems are provided, and each refrigerant supply system is switched on and off according to atmospheric conditions, so that the refrigerant can be efficiently vaporized to prevent overfogging. An intake air cooling device is disclosed in Patent Document 1.

特開２０１１−１１１９４４号公報JP 2011-111944 A

冷媒供給系統には、タンクから冷媒を供給するポンプと、ポンプから供給された冷媒を噴射ノズルに導く導水管がそれぞれ設けられている。ポンプから導水管に冷媒を導く際に導水管内の圧力分布が不均一となることより、導水管に設けられる噴射ノズルからのミスト噴霧にバラツキが生じてしまう。   The refrigerant supply system is provided with a pump that supplies the refrigerant from the tank and a water conduit that guides the refrigerant supplied from the pump to the injection nozzle. When the refrigerant is guided from the pump to the water conduit, the pressure distribution in the water conduit becomes non-uniform, resulting in variations in the mist spray from the injection nozzle provided in the water conduit.

特に、冷媒供給系統の一部のみを運転させる部分冷却の運転時において、ノズルからのミスト噴霧のバラツキが顕著に現れる。特許文献１に開示の吸気冷却装置６０は、水量が最大値でない部分冷却を行う低負荷運転の際に、図７に示すように、各冷媒供給系統Ｌ１〜Ｌ３に備わるポンプＰ１、Ｐ２、Ｐ３を使い分けて用いることで、吸気ダクトの断面に対する上下方向の噴霧をある程度最適化できる。しかしながら、各冷媒供給系統Ｌ１〜Ｌ３に備わる導入管６１〜６５の横方向の噴霧水量の最適化には、管内圧力分布による噴霧水量のバラツキの課題が残る。   In particular, during the partial cooling operation in which only a part of the refrigerant supply system is operated, the mist spray variation from the nozzles appears remarkably. As shown in FIG. 7, the intake air cooling device 60 disclosed in Patent Document 1 includes pumps P 1, P 2, and P 3 provided in each refrigerant supply system L 1 to L 3, as shown in FIG. By using differently, the spray in the vertical direction with respect to the cross section of the intake duct can be optimized to some extent. However, in the optimization of the amount of spray water in the lateral direction of the introduction pipes 61 to 65 provided in each refrigerant supply system L1 to L3, there remains a problem of variation in the amount of spray water due to the pressure distribution in the pipe.

本発明は、上記課題に鑑みてなされたものであり、部分運転時においても均一に水噴霧の可能な、新規かつ改良された吸気冷却装置を提供することを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a new and improved intake air cooling apparatus capable of uniformly spraying water even during partial operation.

本発明の一態様は、吸気入口から取り込まれた吸気を圧縮機に導く吸気ダクトの前記吸気入口側に有するプレフィルタの後段側に設けられ、前記吸気に水を噴霧して冷却する吸気冷却装置であって、前記吸気に前記水を噴霧する複数のノズルと、前記複数のノズルが管軸方向に配設される複数の導水管と、前記複数の導水管のそれぞれに前記水を供給する複数の供給ポンプと、を備え、前記複数の導水管は、それぞれが周長の異なる無端状体であることを特徴とする。   One aspect of the present invention is an intake air cooling device that is provided on a rear stage side of a prefilter that is provided on the intake inlet side of an intake duct that guides intake air taken in from an intake inlet to a compressor, and cools the intake air by spraying water. A plurality of nozzles for spraying the water into the intake air, a plurality of water conduits in which the plurality of nozzles are arranged in a pipe axis direction, and a plurality of water supplying the water to each of the plurality of water conduits The plurality of water conduits are endless bodies each having a different circumferential length.

本発明の一態様によれば、ノズルを無端状に設けたので、吸気冷却装置を部分運転する場合でも、管内圧力のバラツキが低減されて、吸気に水を均一に噴霧できるので、吸気冷却効率が向上する。   According to one aspect of the present invention, since the nozzle is provided endlessly, even when the intake air cooling device is partially operated, variation in the pressure in the pipe is reduced, and water can be sprayed uniformly into the intake air. Will improve.

このとき、本発明の一態様では、前記複数のノズルは、前記導水管の前記供給ポンプと接続する部位から該部位と対向する部位に向けて、疎から密となる分布でそれぞれ配置されることとしてもよい。   At this time, in one aspect of the present invention, the plurality of nozzles are respectively arranged in a sparse to dense distribution from a portion connected to the supply pump of the water conduit toward a portion facing the portion. It is good.

このようにすれば、管内圧力が高い部分のノズルを疎に設けて、管内圧力の低い部分のノズルを密に設けたので、単位面積当たりの水噴霧量のバラツキが緩和されて、吸気に冷媒を均一に噴霧できる。   In this way, since the nozzles with high pressure in the pipe are provided sparsely and the nozzles with low pressure in the pipe are densely provided, the variation in the amount of water spray per unit area is alleviated, and the refrigerant is sucked into the intake air. Can be sprayed uniformly.

また、本発明の一態様では、前記導水管は、断続的に分割され、かつ分割された前記導水管のそれぞれに前記供給ポンプから前記水が供給されることとしてもよい。   In the aspect of the invention, the water conduit may be intermittently divided, and the water may be supplied from the supply pump to each of the divided water conduits.

このように、導水管を断続的に分割して各導水管の長さを短くすることによって、分割された各導水管に均一に水が供給されるので、吸気冷却装置を部分運転する場合でも、管内圧力の不均一を低減させて、吸気に冷媒を均一に噴霧できる。   In this way, water is evenly supplied to each divided water pipe by dividing the water pipe intermittently and shortening the length of each water pipe, so even when the intake air cooling device is partially operated By reducing the non-uniformity of the pressure in the pipe, the refrigerant can be sprayed uniformly in the intake air.

また、本発明の一態様では、前記供給ポンプは、インバータ制御によって前記水の流量が調整可能な可変速ポンプであることとしてもよい。   In one embodiment of the present invention, the supply pump may be a variable speed pump capable of adjusting the flow rate of the water by inverter control.

このようにすれば、管内圧力の不均一を低減させた上で、より綿密にノズルからの噴霧量を調整することができる。   In this way, it is possible to adjust the spray amount from the nozzle more precisely while reducing the non-uniformity of the pressure in the pipe.

また、本発明の一態様では、前記供給ポンプは、少なくとも前記吸気の温度、前記吸気の湿度、前記圧縮機の入口案内翼の開度、及び前記ガスタービンの負荷の何れかに基づいて前記水の流量を調整することとしてもよい。   In the aspect of the invention, the supply pump may be configured to use the water based on at least one of the temperature of the intake air, the humidity of the intake air, the opening degree of the inlet guide blade of the compressor, and the load of the gas turbine. The flow rate may be adjusted.

このようにすれば、管内圧力の不均一を低減させた上で、吸気の状態や、圧縮機のＩＧＶ開度、ガスタービンの負荷に応じて、より綿密にノズルからの噴霧量を調整することができる。   In this way, the amount of spray from the nozzle can be adjusted more closely in accordance with the state of the intake air, the IGV opening of the compressor, and the load of the gas turbine after reducing the non-uniformity in the pipe pressure. Can do.

以上説明したように本発明によれば、部分冷却を行う低負荷運転時でも吸気に水を上下方向、左右方向のそれぞれの噴霧を最適化して均一にすることができる。   As described above, according to the present invention, it is possible to optimize and uniformly spray water in the intake air in the vertical direction and the horizontal direction even during low load operation in which partial cooling is performed.

本発明の一実施形態に係る吸気冷却装置の概略構成図である。1 is a schematic configuration diagram of an intake air cooling device according to an embodiment of the present invention. 本発明の一実施形態に係る吸気冷却装置を備えるガスタービンプラントの構成を示すブロック図である。It is a block diagram showing composition of a gas turbine plant provided with an intake air cooling device concerning one embodiment of the present invention. 本発明の他の一実施形態に係る吸気冷却装置の概略構成図である。It is a schematic block diagram of the intake air cooling device which concerns on other one Embodiment of this invention. 本発明の他の一実施形態に係る吸気冷却装置の概略構成図である。It is a schematic block diagram of the intake air cooling device which concerns on other one Embodiment of this invention. （ａ）〜（ｃ）は、本発明の各実施形態に係る吸気冷却装置の変形例の概略構成図である。(A)-(c) is a schematic block diagram of the modification of the intake air cooling device which concerns on each embodiment of this invention. （ａ）〜（ｃ）は、本発明の各実施形態に係る吸気冷却装置の変形例の概略構成図である。(A)-(c) is a schematic block diagram of the modification of the intake air cooling device which concerns on each embodiment of this invention. 従来の吸気冷却装置の概略構成図である。It is a schematic block diagram of the conventional intake-air-cooling apparatus.

以下、本発明の好適な実施の形態について詳細に説明する。なお、以下に説明する本実施形態は、特許請求の範囲に記載された本発明の内容を不当に限定するものではなく、本実施形態で説明される構成の全てが本発明の解決手段として必須であるとは限らない。   Hereinafter, preferred embodiments of the present invention will be described in detail. The present embodiment described below does not unduly limit the contents of the present invention described in the claims, and all the configurations described in the present embodiment are essential as means for solving the present invention. Not necessarily.

（第１の実施形態）
まず、本発明の一実施形態に係る吸気冷却装置の構成について、図面を使用しながら説明する。図１は、本発明の一実施形態に係る吸気冷却装置の概略構成図である。 (First embodiment)
First, the configuration of an intake air cooling device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of an intake air cooling device according to an embodiment of the present invention.

本実施形態の吸気冷却装置１００は、図１に示すように、吸気に水を噴霧する複数のノズル１０２ａ、１０２ｂ、１０２ｃと、これらのノズル１０２ａ、１０２ｂ、１０２ｃが管軸方向に配設される複数の導水管１０４ａ、１０４ｂ、１０４ｃと、これらの導水管１０４ａ、１０４ｂ、１０４ｃのそれぞれに水を供給する複数の供給ポンプ１０６ａ、１０６ｂ、１０６ｃと、を備える。なお、上記の「吸気」とは、後述の吸気ダクトの吸気入口から取り込まれて圧縮機に導入される空気を指すものとする。   As shown in FIG. 1, the intake air cooling apparatus 100 of the present embodiment includes a plurality of nozzles 102a, 102b, and 102c that spray water on the intake air, and these nozzles 102a, 102b, and 102c are arranged in the tube axis direction. A plurality of water conduits 104a, 104b, 104c and a plurality of supply pumps 106a, 106b, 106c for supplying water to each of the water conduits 104a, 104b, 104c are provided. The above “intake” refers to air that is taken in from an intake inlet of an intake duct, which will be described later, and introduced into the compressor.

各供給ポンプ１０６ａ、１０６ｂ、１０６ｃから供給される水は、それぞれ各導水管１０４ａ、１０４ｂ、１０４ｃを介して、ノズル１０２ａ、１０２ｂ、１０２ｃにそれぞれ導入される。すなわち、各供給ポンプ１０６ａ、１０６ｂ、１０６ｃごとに水供給系統が独立した構成となっている。   Water supplied from the supply pumps 106a, 106b, and 106c is introduced into the nozzles 102a, 102b, and 102c via the water conduits 104a, 104b, and 104c, respectively. That is, the water supply system is independent for each of the supply pumps 106a, 106b, and 106c.

また、各導水管１０４ａ、１０４ｂ、１０４ｃは、ノズル１０２ａ、１０２ｂ、１０２ｃが管軸方向に配設されるノズル配設部１０３ａ、１０３ｂ、１０３ｃと、これらのノズル配設部１０３ａ、１０３ｂ、１０３ｃに供給ポンプ１０６ａ、１０６ｂ、１０６ｃから供給される水を導入する導入部１０５ａ、１０５ｂ、１０５ｃと、をそれぞれ備える。本実施形態では、ノズル１０２ａ、１０２ｂ、１０２ｃが同心で無端状に設けられていることを特徴とする。すなわち、ノズル配設部１０３ａ、１０３ｂ、１０３ｃは、図１に示すように、各導水管１０２ａ、１０２ｂ、１０２ｃごとに周長の異なる無端状体であり、かつノズル配設部１０３ａ、１０３ｂ、１０３ｃのそれぞれが同心に設けられる。   Each of the water conduits 104a, 104b, and 104c is connected to the nozzle arrangement portions 103a, 103b, and 103c in which the nozzles 102a, 102b, and 102c are arranged in the tube axis direction, and the nozzle arrangement portions 103a, 103b, and 103c. Introducing portions 105a, 105b, 105c for introducing water supplied from the supply pumps 106a, 106b, 106c, respectively. This embodiment is characterized in that the nozzles 102a, 102b, and 102c are provided concentrically and endlessly. That is, as shown in FIG. 1, the nozzle arrangement portions 103a, 103b, 103c are endless bodies having different circumferential lengths for the respective water conduits 102a, 102b, 102c, and the nozzle arrangement portions 103a, 103b, 103c. Each is provided concentrically.

このように、本実施形態では、ノズル１０２ａ、１０２ｂ、１０２ｃを同心で無端状に設置する構成としたことを特徴とする。このため、吸気冷却装置１００を部分運転する際に、供給ポンプ１０６ａ、１０６ｂ、１０６ｃからの水圧が弱まった場合でも、各導水管１０４ａ、１０４ｂ、１０４ｃの管内圧力のバラツキが低減されるようになる。従って、吸気冷却装置１００を部分運転する場合でも、吸気に水を均一に噴霧できるので、吸気冷却効率が向上する。   As described above, this embodiment is characterized in that the nozzles 102a, 102b, and 102c are concentrically and endlessly installed. For this reason, even when the water pressure from the supply pumps 106a, 106b, and 106c is weakened during partial operation of the intake air cooling apparatus 100, variations in the pipe pressures of the water conduits 104a, 104b, and 104c are reduced. . Therefore, even when the intake air cooling device 100 is partially operated, water can be sprayed uniformly into the intake air, so that the intake air cooling efficiency is improved.

次に、本発明の一実施形態に係る吸気冷却装置の構成について、図面を使用しながら説明する。図２は、本発明の一実施形態に係る吸気冷却装置を備えるガスタービンプラントの構成を示すブロック図である。   Next, the configuration of the intake air cooling device according to one embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a block diagram illustrating a configuration of a gas turbine plant including an intake air cooling device according to an embodiment of the present invention.

発電プラントとなるガスタービンプラント１０は、吸気ダクト１２と、圧縮機１４と、燃焼器１６と、ガスタービン１８と、発電機２０とを備えている。また、ガスタービンプラント１０には、ガスタービン１８の吸気を冷却するための吸気冷却装置１００が備わる。   A gas turbine plant 10 serving as a power generation plant includes an intake duct 12, a compressor 14, a combustor 16, a gas turbine 18, and a generator 20. In addition, the gas turbine plant 10 includes an intake air cooling device 100 for cooling the intake air of the gas turbine 18.

吸気ダクト１２は、吸気入口２２から取り込まれた吸気（外気：空気）を圧縮機１４に導く。圧縮機１４は、吸気ダクト１２を介して供給された吸気を圧縮する。圧縮機１４の入口には、開度を変動して吸入する燃焼用空気量を調整する入口案内翼となるＩＧＶ（Ｉｎｌｅｔ Ｇｕｉｄｅ Ｖａｎｅ）１５が設けられている。   The intake duct 12 guides intake air (outside air: air) taken from the intake inlet 22 to the compressor 14. The compressor 14 compresses the intake air supplied via the intake duct 12. An IGV (Inlet Guide Vane) 15 serving as an inlet guide vane that adjusts the amount of combustion air to be sucked by changing the opening degree is provided at the inlet of the compressor 14.

ＩＧＶ１５の開度は、制御部１１０によって、ガスタービン１８の出力、つまりガスタービン１８の負荷に応じて調整される。例えば、部分負荷運転時には、ガスタービン１８の軸線方向に対するＩＧＶ１５の角度を大きくし、吸気流量を絞る制御が行われる。また、本実施形態では、制御部１１０は、圧縮機１４のＩＧＶ開度やガスタービン１８の負荷に基づいて、吸気冷却装置１００に備わる供給ポンプ１０６から供給される水の流量を調整する。   The opening degree of the IGV 15 is adjusted by the control unit 110 according to the output of the gas turbine 18, that is, the load of the gas turbine 18. For example, during partial load operation, control is performed to increase the angle of the IGV 15 with respect to the axial direction of the gas turbine 18 and reduce the intake flow rate. Moreover, in this embodiment, the control part 110 adjusts the flow volume of the water supplied from the supply pump 106 with which the intake-air-cooling apparatus 100 is provided based on the IGV opening degree of the compressor 14, or the load of the gas turbine 18.

燃焼器１６は、圧縮機１４から供給された吸気を用いて燃料を燃焼させる。圧縮機１４には、ガスタービン１８は、燃焼器１６から供給された燃焼ガスにより回転する。発電機２０は、ガスタービン１８の回転により発電を行う。   The combustor 16 burns fuel using the intake air supplied from the compressor 14. In the compressor 14, the gas turbine 18 is rotated by the combustion gas supplied from the combustor 16. The generator 20 generates power by the rotation of the gas turbine 18.

吸気ダクト１２は、図１に示すように、上流側から水平ダクト１２ａ、カーブダクト１２ｂ、鉛直ダクト１２ｃを備え、鉛直ダクト１２ｃの下流側には、吸気を整流させながら圧縮機１４に導くマニホールド部１２ｄが設けられている。本実施形態では、マニホールド部１２ｄは、水平ダクト１２ａに対して鉛直方向の下向きに屈曲した鉛直ダクト１２ｃを介して、下向きに延出する構成となっている。なお、本実施形態では、吸気ダクト１２は、下流側のマニホールド部１２ｄが下向きに延出する略Ｌ字型の構成となっているが、吸気ダクトの構成は、例えば、直線型等の他の形状のものでも、本実施形態の吸気冷却装置１００を適用可能である。   As shown in FIG. 1, the intake duct 12 includes a horizontal duct 12a, a curved duct 12b, and a vertical duct 12c from the upstream side, and a manifold section that guides the intake air to the compressor 14 while rectifying the intake air on the downstream side of the vertical duct 12c. 12d is provided. In the present embodiment, the manifold portion 12d is configured to extend downward through a vertical duct 12c that is bent downward in the vertical direction with respect to the horizontal duct 12a. In the present embodiment, the intake duct 12 has a substantially L-shaped configuration in which the downstream manifold portion 12d extends downward. Even if it has a shape, the intake air cooling device 100 of this embodiment can be applied.

また、吸気ダクト１２の吸気入口側には、吸気入口２２から取り込まれた吸気から比較的大きい粉塵等を除去するプレフィルタ２４が設けられている。また、吸気ダクト１２（水平ダクト１２ａ）内のプレフィルタ２４の後段には、プレフィルタ２４を通過した吸気に水を噴霧して冷却する吸気冷却装置１００が設けられている。すなわち、吸気冷却装置１００は、圧縮機１４に導入される吸気に水を噴霧して冷却する機能を有する。   A pre-filter 24 that removes relatively large dust from the intake air taken in from the intake inlet 22 is provided on the intake inlet side of the intake duct 12. In addition, an intake air cooling device 100 that sprays water on the intake air that has passed through the prefilter 24 to cool the intake air is provided at the subsequent stage of the prefilter 24 in the intake duct 12 (horizontal duct 12a). That is, the intake air cooling device 100 has a function of spraying water on the intake air introduced into the compressor 14 and cooling it.

吸気冷却装置１００は、吸気に水を噴霧するノズル１０２が複数設けられる。これらのノズル１０２には、複数の導水管１０４（１０４ａ、１０４ｂ、１０４ｃ）ごとに設けられた供給ポンプ１０６（１０６ａ、１０６ｂ、１０６ｃ）を介して、タンク１０８から水が供給される。   The intake air cooling device 100 is provided with a plurality of nozzles 102 for spraying water on the intake air. These nozzles 102 are supplied with water from a tank 108 via supply pumps 106 (106a, 106b, 106c) provided for each of the plurality of water conduits 104 (104a, 104b, 104c).

本実施形態では、導水管１０４（１０４ａ、１０４ｂ、１０４ｃ）の管内圧力の不均一を低減させた上で、より綿密に各ノズル１０２（１０２ａ、１０２ｂ、１０２ｃ）からの噴霧量を調整するために、供給ポンプ１０６（１０６ａ、１０６ｂ、１０６ｃ）として、インバータ制御によって水の流量が調整可能な可変速ポンプが使用される。具体的には、供給ポンプ１０６は、少なくとも吸気の温度、吸気の湿度、圧縮機１４のＩＧＶ開度、及びガスタービン１８の負荷の何れかに基づいて、制御部１１０で水噴射量を可変とする。   In the present embodiment, in order to adjust the spray amount from each nozzle 102 (102a, 102b, 102c) more precisely after reducing the non-uniformity of the pipe pressure of the water conduits 104 (104a, 104b, 104c). As the supply pump 106 (106a, 106b, 106c), a variable speed pump capable of adjusting the flow rate of water by inverter control is used. Specifically, the supply pump 106 can change the water injection amount by the control unit 110 based on at least one of the temperature of the intake air, the humidity of the intake air, the IGV opening of the compressor 14, and the load of the gas turbine 18. To do.

すなわち、供給ポンプ１０６は、上述した各変動因子に基づいて、より綿密な流量となるように導水管１０４に水を導入するので、オーバーフォギングすることなく、吸気が冷却されるようになる。前述したように、本実施形態では、導入管１０２のノズル配設部１０３ａ、１０３ｂ、１０３ｃ（図１参照）を無端状体とする。このため、供給ポンプ１０６を可変速ポンプとすることによって、噴霧する水の流量調整と、稼働させるポンプ台数と調整することによって、管内圧力の不均一を低減させた上で、より綿密にノズルからの噴霧量を調整できる。   That is, the supply pump 106 introduces water into the water conduit 104 so as to obtain a more precise flow rate based on the above-described variable factors, so that the intake air is cooled without overfogging. As described above, in this embodiment, the nozzle arrangement portions 103a, 103b, and 103c (see FIG. 1) of the introduction pipe 102 are endless bodies. Therefore, by adjusting the flow rate of water to be sprayed and adjusting the number of pumps to be operated by making the supply pump 106 a variable speed pump, the unevenness of the pressure in the pipe is reduced, and the nozzle is more closely adjusted. The amount of spray can be adjusted.

また、吸気ダクト１２の水平ダクト１２ａ内には、吸気冷却装置１００よりも下流側に吸気の際に発生する音を含む振動を抑制するサイレンサ４０が設けられている。また、吸気ダクト１２の鉛直ダクト１２ｃと連結するマニホールド部１２ｄの入口側には、鉛直ダクト１２ｃを介して導入される吸気に含まれる不純物や、吸気ダクト内での作業中等に落下させたネジ等を取り除くためのフィルタ４２が設けられている。   In addition, a silencer 40 is provided in the horizontal duct 12 a of the intake duct 12 to suppress vibration including sound generated during intake, on the downstream side of the intake air cooling device 100. Further, on the inlet side of the manifold portion 12d connected to the vertical duct 12c of the intake duct 12, impurities contained in the intake air introduced through the vertical duct 12c, screws dropped during work in the intake duct, etc. A filter 42 is provided for removing the.

このように、本実施形態では、導入管１０２のノズル配設部１０３ａ、１０３ｂ、１０３ｃを介して、ノズル１０２ａ、１０２ｂ、１０２ｃを無端状に設けたので、吸気冷却装置１００を部分運転する場合でも、導入管１０２の管内圧力のバラツキが低減される。また、圧縮機１４のＩＧＶ開度やガスタービン負荷、吸気の温度・湿度に応じて、水噴射の流量を調整できるので、より綿密に上下、左右方向共に水量がＭＡＸでない状況下、すなわち、部分負荷、部分冷却時における吸気への水噴霧を最適化できる。このため、吸気冷却効率を向上させた上で、水滴がガスタービン１８の圧縮機１４に侵入するリスクも低減できる。   Thus, in this embodiment, since the nozzles 102a, 102b, and 102c are provided endlessly via the nozzle arrangement portions 103a, 103b, and 103c of the introduction pipe 102, even when the intake air cooling device 100 is partially operated. The variation in the pressure inside the introduction pipe 102 is reduced. In addition, since the flow rate of water injection can be adjusted according to the IGV opening of the compressor 14, the gas turbine load, and the intake air temperature and humidity, the amount of water is not more than the maximum in both the vertical and horizontal directions, that is, It is possible to optimize water spray on the intake air during load and partial cooling. For this reason, it is possible to reduce the risk of water droplets entering the compressor 14 of the gas turbine 18 while improving the intake air cooling efficiency.

（第２の実施形態）
次に、本発明の吸気冷却装置の他の実施形態の構成について、図面を使用しながら説明する。図３は、本発明の他の一実施形態に係る吸気冷却装置の概略構成図である。 (Second Embodiment)
Next, the configuration of another embodiment of the intake air cooling device of the present invention will be described with reference to the drawings. FIG. 3 is a schematic configuration diagram of an intake air cooling device according to another embodiment of the present invention.

本実施形態の吸気冷却装置２００は、図３に示すように、吸気に水を噴霧する複数のノズル２０２ａ、２０２ｂ、２０２ｃと、これらのノズル２０２ａ、２０２ｂ、２０２ｃが管軸方向に配設される複数の導水管２０４ａ、２０４ｂ、２０４ｃと、これらの導水管２０４ａ、２０４ｂ、２０４ｃのそれぞれに水を供給する複数の供給ポンプ２０６ａ、２０６ｂ、２０６ｃと、を備える。各供給ポンプ２０６ａ、２０６ｂ、２０６ｃから供給される水は、それぞれ各導水管２０４ａ、２０４ｂ、２０４ｃを介して、ノズル２０２ａ、２０２ｂ、２０２ｃにそれぞれ導入される。すなわち、各供給ポンプ２０６ａ、２０６ｂ、２０６ｃごとに水供給系統が独立した構成となっている。   As shown in FIG. 3, the intake air cooling apparatus 200 of the present embodiment includes a plurality of nozzles 202a, 202b, and 202c that spray water on the intake air, and these nozzles 202a, 202b, and 202c are arranged in the tube axis direction. A plurality of water conduits 204a, 204b, and 204c, and a plurality of supply pumps 206a, 206b, and 206c that supply water to the water conduits 204a, 204b, and 204c, respectively. Water supplied from the supply pumps 206a, 206b, and 206c is introduced into the nozzles 202a, 202b, and 202c via the water conduits 204a, 204b, and 204c, respectively. That is, the water supply system is independent for each of the supply pumps 206a, 206b, and 206c.

また、各導水管２０４ａ、２０４ｂ、２０４ｃは、ノズル２０２ａ、２０２ｂ、２０２ｃが設けられるノズル配設部２０３ａ、２０３ｂ、２０３ｃと、これらのノズル配設部２０３ａ、２０３ｂ、２０３ｃに供給ポンプ２０６ａ、２０６ｂ、２０６ｃから供給される水を導入する導入部２０５ａ、２０５ｂ、２０５ｃと、をそれぞれ備える。ノズル配設部２０３ａ、２０３ｂ、２０３ｃは、各導水管２０２ａ、２０２ｂ、２０２ｃごとに周長の異なる無端状体であり、かつノズル配設部２０３ａ、２０３ｂ、２０３ｃのそれぞれが同心に設けられる。   Each of the water conduits 204a, 204b, and 204c includes nozzle arrangement portions 203a, 203b, and 203c in which the nozzles 202a, 202b, and 202c are provided, and supply pumps 206a, 206b, and the nozzle arrangement portions 203a, 203b, and 203c, Introducing portions 205a, 205b, and 205c for introducing water supplied from 206c, respectively. The nozzle arrangement portions 203a, 203b, and 203c are endless bodies having different circumferential lengths for the respective water conduits 202a, 202b, and 202c, and the nozzle arrangement portions 203a, 203b, and 203c are provided concentrically.

本実施形態では、ノズル２０２ａ、２０２ｂ、２０２ｃの配置が第１の実施形態と異なる。すなわち、図３に示すように、ノズル２０２ａ、２０２ｂ、２０２ｃがノズル配設部２０３ａ、２０３ｂ、２０３ｃと導入部２０５ａ、２０５ｂ、２０５ｃとを接続する部位から、当該部位と対向する部位に向けて、疎から密となる分布で無端状にそれぞれ配置されることを特徴とする。すなわち、管内圧力が高い供給ポンプ２０６ａ、２０６ｂ、２０６ｃに近い部分のノズル２０２ａ、２０２ｂ、２０２ｃを疎に設け、当該部分と対向する部分となる管内圧力の低い部分のノズル２０２ａ、２０２ｂ、２０２ｃを密に設けている。   In the present embodiment, the arrangement of the nozzles 202a, 202b, and 202c is different from that of the first embodiment. That is, as shown in FIG. 3, the nozzles 202a, 202b, and 202c are connected from the portion where the nozzle arrangement portions 203a, 203b, and 203c and the introduction portions 205a, 205b, and 205c are connected to the portion that faces the portion, They are arranged endlessly in a distribution from sparse to dense. That is, the nozzles 202a, 202b, and 202c in the portions close to the supply pumps 206a, 206b, and 206c having high in-pipe pressure are provided sparsely, and the nozzles 202a, 202b, and 202c in the portions having low in-pipe pressure that are opposed to the portions are densely arranged. Provided.

このように、ノズル２０２ａ、２０２ｂ、２０２ｃを配置することによって、単位面積当たりの水噴霧量のバラツキが緩和されて、吸気に水を均一に噴霧できる。すなわち、管内圧力が高い供給ポンプ２０６ａ、２０６ｂ、２０６ｃに近い部分における単位面積当たりの水噴霧量と、当該部分と対向する部分となる管内圧力の低い部分における単位面積当たりの水噴霧量をより均一にできるので、吸気への水噴霧のバラツキが低減し、吸気の冷却効率を向上させられる。   As described above, by disposing the nozzles 202a, 202b, and 202c, variations in the amount of water spray per unit area are alleviated, and water can be sprayed uniformly into the intake air. That is, the water spray amount per unit area in a portion close to the supply pumps 206a, 206b, and 206c where the pipe internal pressure is high, and the water spray amount per unit area in a portion where the pipe internal pressure is low and the portion facing the portion are more uniform Therefore, the dispersion of water spray on the intake air is reduced, and the cooling efficiency of the intake air can be improved.

また、本実施形態では、第１の実施形態と同様に、導水管２０４ａ、２０４ｂ、２０４ｃの管内圧力の不均一を低減させた上で、より綿密に各ノズル２０２ａ、２０２ｂ、２０２ｃからの噴霧量を調整するために、供給ポンプ２０６（２０６ａ、２０６ｂ、２０６ｃ）として、インバータ制御によって水の流量が調整可能な可変速ポンプが使用される。具体的には、供給ポンプ２０６は、少なくとも吸気の温度、吸気の湿度、圧縮機１４のＩＧＶ開度、及びガスタービン１８の負荷の何れかに基づいて、水噴射量を可変とする。このように、供給ポンプ２０６を可変速ポンプとすることによって、噴霧する水の流量調整と、稼働させるポンプ台数と調整することによって、管内圧力の不均一を低減させた上で、より綿密にノズルからの噴霧量を調整できる。   Further, in the present embodiment, as in the first embodiment, the amount of spray from each nozzle 202a, 202b, 202c is more closely reduced after reducing the non-uniformity in the pipe pressure of the water conduits 204a, 204b, 204c. In order to adjust the flow rate, a variable speed pump capable of adjusting the flow rate of water by inverter control is used as the supply pump 206 (206a, 206b, 206c). Specifically, the supply pump 206 makes the water injection amount variable based on at least one of the temperature of the intake air, the humidity of the intake air, the IGV opening of the compressor 14, and the load of the gas turbine 18. In this way, the supply pump 206 is a variable speed pump, and by adjusting the flow rate of water to be sprayed and the number of pumps to be operated, nonuniformity in pipe pressure is reduced, and the nozzle is more precisely The amount of spray from can be adjusted.

（第３の実施形態）
次に、本発明の吸気冷却装置の他の実施形態の構成について、図面を使用しながら説明する。図４は、本発明の他の一実施形態に係る吸気冷却装置の概略構成図である。 (Third embodiment)
Next, the configuration of another embodiment of the intake air cooling device of the present invention will be described with reference to the drawings. FIG. 4 is a schematic configuration diagram of an intake air cooling device according to another embodiment of the present invention.

本実施形態の吸気冷却装置３００は、図４に示すように、吸気に水を噴霧する複数のノズル３０２ａ、３０２ｂ、３０２ｃと、これらのノズル３０２ａ、３０２ｂ、３０２ｃが管軸方向に配設される複数の導水管３０４ａ、３０４ｂ、３０４ｃと、これらの導水管３０４ａ、３０４ｂ、３０４ｃのそれぞれに水を供給する複数の供給ポンプ３０６ａ、３０６ｂ、３０６ｃと、を備える。各供給ポンプ３０６ａ、３０６ｂ、３０６ｃから供給される水は、それぞれ各導水管３０４ａ、３０４ｂ、３０４ｃを介して、ノズル３０２ａ、３０２ｂ、３０２ｃにそれぞれ導入される。すなわち、各供給ポンプ３０６ａ、３０６ｂ、３０６ｃごとに水供給系統が独立した構成となっている。   As shown in FIG. 4, the intake air cooling apparatus 300 of the present embodiment includes a plurality of nozzles 302 a, 302 b, 302 c that spray water on the intake air, and these nozzles 302 a, 302 b, 302 c arranged in the tube axis direction. A plurality of water conduits 304a, 304b, and 304c and a plurality of supply pumps 306a, 306b, and 306c that supply water to the water conduits 304a, 304b, and 304c, respectively. Water supplied from the supply pumps 306a, 306b, and 306c is introduced into the nozzles 302a, 302b, and 302c via the water conduits 304a, 304b, and 304c, respectively. That is, the water supply system is independent for each of the supply pumps 306a, 306b, and 306c.

また、各導水管３０４ａ、３０４ｂ、３０４ｃは、ノズル３０２ａ、３０２ｂ、３０２ｃが設けられるノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４と、これらのノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４に供給ポンプ３０６ａ、３０６ｂ、３０６ｃから供給される水を導入する導入部３０５ａ、３０５ｂ、３０５ｃと、をそれぞれ備える。ノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４は、各導水管３０２ａ、３０２ｂ、３０２ｃごとに周長の異なる無端状体であり、かつノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４のそれぞれが同心に設けられる。   Further, each of the water conduits 304a, 304b, 304c includes nozzle arrangement portions 303a1-a4, 303b1-b4, 303c1-c4 provided with the nozzles 302a, 302b, 302c, and these nozzle arrangement portions 303a1-a4, 303b1- b4 and 303c1 to c4 are respectively provided with introduction portions 305a, 305b, and 305c for introducing water supplied from the supply pumps 306a, 306b, and 306c. The nozzle arrangement parts 303a1 to a4, 303b1 to b4, 303c1 to c4 are endless bodies having different circumferential lengths for the respective water conduits 302a, 302b, and 302c, and the nozzle arrangement parts 303a1 to a4, 303b1 to b4, Each of 303c1-c4 is provided concentrically.

本実施形態では、導水管３０４ａ、３０４ｂ、３０４ｃのノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４の構成が第１の実施形態と異なる。すなわち、図４に示すように、ノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４は、断続的に分割され、かつ分割されたノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４のそれぞれに供給ポンプ３０６ａ、３０６ｂ、３０６ｃから水が供給される構成となっている。すなわち、ノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４を断続的に分割して、各ノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４のそれぞれの長さを短くして、これらノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４が無端状体となるように設置したことを特徴とする。   In the present embodiment, the configuration of the nozzle arrangement portions 303a1 to a4, 303b1 to b4, and 303c1 to c4 of the water conduits 304a, 304b, and 304c is different from that of the first embodiment. That is, as shown in FIG. 4, the nozzle arrangement portions 303a1 to a4, 303b1 to b4, and 303c1 to c4 are intermittently divided, and the divided nozzle arrangement portions 303a1 to a4, 303b1 to b4, and 303c1 are divided. Water is supplied to each of c4 from supply pumps 306a, 306b, and 306c. That is, the nozzle arrangement portions 303a1 to a4, 303b1 to b4, and 303c1 to c4 are intermittently divided to shorten the lengths of the nozzle arrangement portions 303a1 to a4, 303b1 to b4, and 303c1 to c4. These nozzle arrangement portions 303a1 to a4, 303b1 to b4, and 303c1 to c4 are installed so as to be endless bodies.

本実施形態では、ノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４は、図４に示すように、矩形の無端状体であり、各辺ごとに分割して形成される。なお、ノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４は、図４に示す４分割に限定されず、例えば、より管内圧力の不均一を低減させるために、５分割以上に断続的に分割して、それぞれの分割管路に供給ポンプで水を供給するようにしてもよい。   In the present embodiment, the nozzle arrangement portions 303a1 to a4, 303b1 to b4, and 303c1 to c4 are rectangular endless bodies as shown in FIG. 4 and are formed separately for each side. The nozzle arrangement portions 303a1 to a4, 303b1 to b4, and 303c1 to c4 are not limited to the four divisions shown in FIG. 4. For example, in order to further reduce the non-uniformity in the pipe pressure, the nozzle arrangement portions are intermittently divided into five or more divisions. It is possible to divide the water into water and supply water to each of the divided pipes with a supply pump.

このように、ノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４を断続的に分割して、それぞれの長さを短くすることによって、分割された各ノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４に管内圧力のバラツキが低減されて、均一に水が供給され易くなる。このため、吸気冷却装置３００を部分運転する場合でも、管内圧力の不均一を低減させて、吸気に水を均一に噴霧できる。また、各ノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４を断続的に分割させた構造とすることによって、分割させたノズル配設部３０３ａ１〜ａ４、３０３ｂ１〜ｂ４、３０３ｃ１〜ｃ４を製造してから、つなぎ合わせて形成することができるので、無端状体のノズル配設部の製造が容易となり、ノズル配設部を備える吸気冷却装置３００の製造効率も向上する。   In this way, the nozzle arrangement portions 303a1 to a4, 303b1 to b4, and 303c1 to c4 are intermittently divided to shorten the respective lengths, thereby dividing the divided nozzle arrangement portions 303a1 to a4 and 303b1. -B4 and 303c1-c4 are reduced in variation in the pressure in the pipe, and water is easily supplied uniformly. For this reason, even when the intake-air cooling apparatus 300 is partially operated, the non-uniformity of the in-pipe pressure can be reduced and water can be uniformly sprayed into the intake air. Further, the nozzle arrangement portions 303a1 to a4, 303b1 to b4, and 303c1 to c4 are divided by adopting a structure in which the nozzle arrangement portions 303a1 to a4, 303b1 to b4, and 303c1 to c4 are divided intermittently. Since they can be formed after being manufactured, it is easy to manufacture an endless nozzle arrangement portion, and the manufacturing efficiency of the intake air cooling device 300 including the nozzle arrangement portion is improved.

また、本実施形態では、第１の実施形態と同様に、導水管３０４ａ、３０４ｂ、３０４ｃの管内圧力の不均一を低減させた上で、より綿密に各ノズル３０２ａ、３０２ｂ、３０２ｃからの噴霧量を調整するために、供給ポンプ３０６（３０６ａ、３０６ｂ、３０６ｃ）として、インバータ制御によって水の流量が調整可能な可変速ポンプが使用される。具体的には、供給ポンプ３０６は、少なくとも吸気の温度、吸気の湿度、圧縮機１４のＩＧＶ開度、及びガスタービン１８の負荷の何れかに基づいて、水噴射量を可変とする。このように、供給ポンプ３０６を可変速ポンプとすることによって、噴霧する水の流量調整と、稼働させるポンプ台数と調整することによって、管内圧力の不均一を低減させた上で、より綿密にノズルからの噴霧量を調整できる。   Further, in the present embodiment, as in the first embodiment, the amount of spray from each nozzle 302a, 302b, 302c is more closely reduced after reducing the non-uniformity in the pipe pressure of the water conduits 304a, 304b, 304c. In order to adjust the pressure, a variable speed pump capable of adjusting the flow rate of water by inverter control is used as the supply pump 306 (306a, 306b, 306c). Specifically, the supply pump 306 makes the water injection amount variable based on at least one of the temperature of the intake air, the humidity of the intake air, the IGV opening of the compressor 14, and the load of the gas turbine 18. In this way, the supply pump 306 is a variable speed pump, and by adjusting the flow rate of water to be sprayed and the number of pumps to be operated, the non-uniformity of the pressure in the pipe is reduced, and the nozzle is more precisely arranged. The amount of spray from can be adjusted.

以上説明した第１乃至第３の各実施形態では、吸気冷却装置の導水管のノズル配設部が四角形であるが、ノズル配設部は、無端状体であればよいので、その形状は、四角形に限定されない。すなわち、同形状の導水管を同心状に設置する構成となっていればよい。例えば、図５（ａ）、（ｂ）、（ｃ）に示すように、各ノズル配設部４０３、５０３、６０３を略円形の環状構造としてもよく、また、三角形や五角形等の四角形以外の多角形や、楕円型等の他の形状の無端状体とすることも可能である。   In each of the first to third embodiments described above, the nozzle arrangement portion of the water guide pipe of the intake air cooling device is a quadrangle, but the nozzle arrangement portion may be an endless body. It is not limited to a rectangle. That is, it is only necessary that the water conduits having the same shape are installed concentrically. For example, as shown in FIGS. 5A, 5B, and 5C, the nozzle arrangement portions 403, 503, and 603 may have a substantially circular annular structure, and other than a quadrangle such as a triangle or a pentagon. It is also possible to use an endless body having another shape such as a polygon or an ellipse.

さらに、第１乃至第３の各実施形態では、吸気冷却装置の導水管のノズル配設部がそれぞれ同心状に設けられているが、ノズル配設部は、少なくとも無端状体で、かつそれぞれの周長が異なっていればよいので、その設置は、同心状に限定されない。すなわち、同形状の導水管が無端状に設置され、かつそれぞれの周長が異なっている構成となっていればよい。   Furthermore, in each of the first to third embodiments, the nozzle arrangement portion of the water conduit of the intake air cooling device is provided concentrically. However, the nozzle arrangement portion is at least an endless body, and each Since the circumferences only need to be different, the installation is not limited to a concentric shape. That is, it is only necessary that the same-shaped water conduits are installed endlessly and have different circumferential lengths.

例えば、図６（ａ）、（ｂ）、（ｃ）に示すように、各ノズル配設部７０３、８０３、９０３が同心状でなく、それぞれが偏心した配置となるように構成してもよい。その際に、各ノズル配設部７０３、８０３、９０３が偏心した配置とする場合には、水噴霧のバラツキを低減させるためには、特に、図６（ｂ）に示すように、ポンプＰ１、Ｐ２、Ｐ３に近い方から遠い方に向けてノズル８０２の配置が疎から密になるように設置することが好ましい。   For example, as shown in FIGS. 6A, 6 </ b> B, and 6 </ b> C, the nozzle arrangement portions 703, 803, and 903 may not be concentric and may be arranged eccentrically. . At that time, when the nozzle arrangement portions 703, 803, and 903 are arranged in an eccentric manner, in order to reduce the variation in water spray, in particular, as shown in FIG. It is preferable to install the nozzles 802 so that the arrangement of the nozzles 802 becomes sparse to dense from the side closer to P2 and P3.

なお、上記のように本発明の各実施形態について詳細に説明したが、本発明の新規事項及び効果から実体的に逸脱しない多くの変形が可能であることは、当業者には、容易に理解できるであろう。従って、このような変形例は、全て本発明の範囲に含まれるものとする。   Although each embodiment of the present invention has been described in detail as described above, it is easily understood by those skilled in the art that many modifications can be made without departing from the novel matters and effects of the present invention. It will be possible. Therefore, all such modifications are included in the scope of the present invention.

例えば、明細書又は図面において、少なくとも一度、より広義又は同義な異なる用語と共に記載された用語は、明細書又は図面のいかなる箇所においても、その異なる用語に置き換えることができる。また、ガスタービンプラント、吸気冷却装置の構成、動作も本発明の各実施形態で説明したものに限定されず、種々の変形実施が可能である。   For example, a term described with a different term having a broader meaning or the same meaning at least once in the specification or the drawings can be replaced with the different term in any part of the specification or the drawings. Further, the configurations and operations of the gas turbine plant and the intake air cooling device are not limited to those described in the embodiments of the present invention, and various modifications can be made.

１０ ガスタービンプラント
１２ 吸気ダクト
１２ａ 水平ダクト
１２ｂ カーブダクト
１２ｃ 鉛直ダクト
１２ｄ マニホールド部
１４ 圧縮機
１４ａ （圧縮機の）入口
１５ 入口案内翼（ＩＧＶ）
１６ 燃焼器
１８ ガスタービン
２０ 発電機
２２ 吸気入口
２４ プレフィルタ
４０ サイレンサ
４２ フィルタ
１００ 吸気冷却装置
１０２ ノズル
１０３ａ、１０３ｂ、１０３ｃ ノズル配設部
１０４ 導入管
１０５ａ、１０５ｂ、１０５ｃ 導入部
１０６ 供給ポンプ
１０８ タンク
１１０ 制御部 DESCRIPTION OF SYMBOLS 10 Gas turbine plant 12 Intake duct 12a Horizontal duct 12b Curved duct 12c Vertical duct 12d Manifold part 14 Compressor 14a (Compressor) inlet 15 Inlet guide vane (IGV)
16 Combustor 18 Gas turbine 20 Generator 22 Intake inlet 24 Pre-filter 40 Silencer 42 Filter 100 Intake cooling device 102 Nozzle 103a, 103b, 103c Nozzle arrangement part 104 Introducing pipe 105a, 105b, 105c Introducing part 106 Supply pump 108 Tank 110 Control unit

Claims (6)

吸気入口から取り込まれた吸気を圧縮機に導く吸気ダクトの前記吸気入口側に有するプレフィルタの後段側に設けられ、前記吸気に水を噴霧して冷却する吸気冷却装置であって、
前記吸気に前記水を噴霧する複数のノズルと、
前記複数のノズルが管軸方向に配設される複数の導水管と、
前記複数の導水管のそれぞれに前記水を供給する複数の供給ポンプと、を備え、
前記複数の導水管は、それぞれが周長の異なる無端状体であり、
前記複数の導水管は、第１導水管と、該第１導水管に囲まれるように該第１導水管の内側に設けられる第２導水管と、を含み、
前記第１導水管は、前記第２導水管に対して偏心して配置された
ことを特徴とする吸気冷却装置。 An intake air cooling device that is provided on a rear stage side of a pre-filter that is provided on the intake inlet side of an intake duct that guides intake air taken in from an intake air inlet to a compressor, and sprays water to cool the intake air;
A plurality of nozzles for spraying the water into the intake air;
A plurality of water conduits in which the plurality of nozzles are disposed in a tube axis direction;
A plurality of supply pumps for supplying the water to each of the plurality of water conduits,
Wherein the plurality of water guide pipe, Ri endless member der having different each circumference,
The plurality of water conduits include a first water conduit, and a second water conduit provided inside the first water conduit so as to be surrounded by the first water conduit,
The intake air cooling apparatus according to claim 1, wherein the first water conduit is arranged eccentrically with respect to the second water conduit . 吸気入口から取り込まれた吸気を圧縮機に導く吸気ダクトの前記吸気入口側に有するプレフィルタの後段側に設けられ、前記吸気に水を噴霧して冷却する吸気冷却装置であって、
前記吸気に前記水を噴霧する複数のノズルと、
前記複数のノズルが管軸方向に配設される複数の導水管と、
前記複数の導水管のそれぞれに前記水を供給する複数の供給ポンプと、を備え、
前記複数の導水管は、それぞれが周長の異なる無端状体であり、
前記複数のノズルは、前記導水管の前記供給ポンプと接続する部位から該部位と対向する部位に向けて、疎から密となる分布でそれぞれ配置されることを特徴とする吸気冷却装置。 An intake air cooling device that is provided on a rear stage side of a pre-filter that is provided on the intake inlet side of an intake duct that guides intake air taken in from an intake air inlet to a compressor, and sprays water to cool the intake air;
A plurality of nozzles for spraying the water into the intake air;
A plurality of water conduits in which the plurality of nozzles are disposed in a tube axis direction;
A plurality of supply pumps for supplying the water to each of the plurality of water conduits,
The plurality of water conduits are endless bodies each having a different circumference.
Wherein the plurality of nozzles, the direction from portion connected with the feed pump conduit to the site of the site opposed, Utokara intake air cooler device in a dense distribution you being disposed respectively. 吸気入口から取り込まれた吸気を圧縮機に導く吸気ダクトの前記吸気入口側に有するプレフィルタの後段側に設けられ、前記吸気に水を噴霧して冷却する吸気冷却装置であって、
前記吸気に前記水を噴霧する複数のノズルと、
前記複数のノズルが管軸方向に配設される複数の導水管と、
前記複数の導水管のそれぞれに前記水を供給する複数の供給ポンプと、を備え、
前記複数の導水管は、それぞれが周長の異なる無端状体であり、
前記導水管は、断続的に分割され、かつ分割された前記導水管のそれぞれに前記供給ポンプから前記水が供給されることを特徴とする吸気冷却装置。 An intake air cooling device that is provided on a rear stage side of a pre-filter that is provided on the intake inlet side of an intake duct that guides intake air taken in from an intake air inlet to a compressor, and sprays water to cool the intake air;
A plurality of nozzles for spraying the water into the intake air;
A plurality of water conduits in which the plurality of nozzles are disposed in a tube axis direction;
A plurality of supply pumps for supplying the water to each of the plurality of water conduits,
The plurality of water conduits are endless bodies each having a different circumference.
The water conduit is intermittently divided, and divided the water conduit inspiratory cooler you wherein water is supplied from the supply pump to each. 前記供給ポンプは、インバータ制御によって前記水の流量が調整可能な可変速ポンプであることを特徴とする請求項１乃至請求項３の何れか１項に記載の吸気冷却装置。   The intake air cooling device according to any one of claims 1 to 3, wherein the supply pump is a variable speed pump capable of adjusting a flow rate of the water by inverter control. 前記供給ポンプは、少なくとも前記吸気の温度、前記吸気の湿度、前記圧縮機の入口案内翼の開度、及びガスタービンの負荷の何れかに基づいて前記水の流量を調整することを特徴とする請求項４に記載の吸気冷却装置。 The supply pump, and wherein adjusting at least the temperature of the intake air, the humidity of the intake, the inlet guide vane opening of the compressor, the flow rate of the water based on any of the load及beauty gas turbine The intake air cooling device according to claim 4. ガスタービンと、A gas turbine,
前記ガスタービンの吸気を冷却するための請求項１乃至５の何れか一項に記載の吸気冷却装置と、The intake air cooling device according to any one of claims 1 to 5, for cooling the intake air of the gas turbine;
を備えることを特徴とするガスタービンプラント。A gas turbine plant comprising:
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